This reverts commit 989285b7.

Reason for revert: broke internal bots

Original change's description:
> [tools] Add benchmark owners to the config
> 
> R=​machenbach@chromium.org
> 
> No-Try: true
> Bug: chromium:826280
> Change-Id: Ic34d13170dfecdd9e791974a34c33ba0248c7a38
> Reviewed-on: https://chromium-review.googlesource.com/1053809
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#53138}

TBR=machenbach@chromium.org,sergiyb@chromium.org

Change-Id: Iec3f8fa8eda77b1bcfb00274b28a12e4d233d6c4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:826280
Reviewed-on: https://chromium-review.googlesource.com/1057091Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53140}